return null;
        }
    }

    /**
     * Gets or creates an FTP client for the specified FTP information.
     * This method either reuses an existing client from the queue or creates a new one.
     * It handles SSL/TLS configuration, authentication, and various FTP client settings.
     *
     * @param info The FTP information containing host, port, and other connection details

       * We eliminate unnecessary node creation by catching cases where old nodes can be reused
       * because their next fields won't change. Statistically, at the default threshold, only
       * about one-sixth of them need cloning when a table doubles. The nodes they replace will be
       * garbage collectable as soon as they are no longer referenced by any reader thread that may
       * be in the midst of traversing table right now.

    public static final String PROCESS_TYPE_DISPLAYING = "D";

    /** Process type for both crawling and displaying operations. */
    public static final String PROCESS_TYPE_BOTH = "B";

    /** Number of milliseconds in one day. */
    public static final long ONE_DAY_IN_MILLIS = 24L * 60L * 60L * 1000L;

    /** Guest user identifier. */
    public static final String GUEST_USER = "guest";

* Fix a race condition in the scheduler preemption logic that could cause nominatedNodeName of a pod not to be considered in one or more scheduling cycles. ([#72504](https://github.com/kubernetes/kubernetes/pull/72504), [@bsalamat](https://github.com/bsalamat))

- Pick one device class deterministically for extended resource when there are more than one ([#135037](https://github.com/kubernetes/kubernetes/pull/135037), [@yliaog](https://github.com/yliaog)) [SIG Node, Scheduling and Testing]

   * containing each of the strings in {@code s}, while {@code ImmutableSortedMultiset.of(s)}
   * returns an {@code ImmutableSortedMultiset<Multiset<String>>} containing one element (the given
   * multiset itself).
   *
   * <p>Despite the method name, this method attempts to avoid actually copying the data when it is

/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *

		return err
	}
	buf := bufio.NewReader(rs)

	// The count of files inside a zip is truncated to fit in a uint16.
	// Gloss over this by reading headers until we encounter
	// a bad one, and then only report an ErrFormat or UnexpectedEOF if
	// the file count modulo 65536 is incorrect.
	for {
		f := &File{zip: r, zipr: rdr}
		err = readDirectoryHeader(f, buf)

  - `--service-account-issuer`, should be set to a URL identifying the API server that will be stable over the cluster lifetime.
  - `--service-account-key-file`, set to one or more files containing one or more public keys used to verify tokens.

///

そしてコンテナで作業する場合、コンテナの起動と管理に使用する同じシステムには、**ロードバランサー**（**TLS Termination Proxy**の可能性もある）から**ネットワーク通信**（HTTPリクエストなど）をアプリのあるコンテナ（複数可）に送信するための内部ツールが既にあるはずです。

### 1つのロードバランサー - 複数のワーカーコンテナー { #one-load-balancer-multiple-worker-containers }

**Kubernetes**や同様の分散コンテナ管理システムで作業する場合、その内部のネットワーキングのメカニズムを使用することで、メインの**ポート**でリッスンしている単一の**ロードバランサー**が、アプリを実行している可能性のある**複数のコンテナ**に通信（リクエスト）を送信できるようになります。